Why isn't Anita fired for being infectious: Because her job doesn't relate to healthcare or contact with children.

I actually have no problem with Anita being highly infectious and maintaining her job. Cherry worked in a hospital. Richard works with kids (it shouldn't be an issue because he shouldn't have blood to blood contact with them, but look at how people react to homosexuals. The Richard issue is a "protect our children who aren't actually in danger" knee jerk, not an actual biological contamination issue at all).